Lincoln Electric SVM104-A ユーザーズマニュアル

The "THERMAL" LED is lit.
The "MALFUNCTION" or
"FAULT" LED is blinking.  The
machine has no output.

The "MALFUNCTION" or
"FAULT" LED is lit.  The
machine has no output.

When the torch trigger is pulled
the "OUTPUT ON" LED lights
for a very short period of time.
The pilot arc is unusually bright
but the cutting arc does not
transfer to the work.

1. The machine may be over-

heated.  This condition may 
be due to not enough ventila-
tion.  Make certain that the
machine's air intakes and 
exhaust louvers are not 
blocked or restricted.  Allow 
machine to cool.

2. The machine's duty cycle 

may have been exceeded. 
Allow machine to cool and 
modify cutting process.  

1. Check the torch consumables 

to see if they are melted 
together or are touching each 
other.  Clean or replace.

2. Turn the machine off and on 

again.  If the "FAULT" LED will 
not stay off when you try to 
cut there is a failure within the 
machine.  THE MACHINE 
SHOULD NOT BE LEFT ON.

3. Replace the torch and cable 

assembly.

1. Check Torch Consumables.
2. Check for proper Air Pres-

sure.

3. Check work cables and 

connections.

4. Clean any painted or heavily

corroded work surfaces.

5. If no malfunction or fault indi-

cators are lit, then contact 
your local Lincoln Authorized 
Field Service Facility.

1. The normally closed 

primary thermostat could 
be faulty. Replace. See 
wiring diagram.

2. Check leads #321 and 

#322 for loose or faulty con-
nections at plug J8 on the 
Control Board.

3. If no loose or faulty wiring is 

found, the Control Board 
could be faulty.  Replace.

1. The torch and cable 

assembly could be faulty. 
Perform the Torch, Torch 
Cable Assembly, and 
Internal Trigger and Safety 
Circuit Tests.

2. The Power Board could be 

faulty.  Perform Power 
Board Test.

3. Perform Transistor Module

4. The Control Board could be 

faulty.  Replace. 

5. Perform Main Transformer

1. The Transistor Module 

could be faulty.  Perform 
the Transistor Module Test.

2. If the transistor module is 

faulty, replace the Power 
Board also. 

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln
Electric Service Department for technical troubleshooting assistance before you proceed call 216-383-2531 or 1-800-833-9353.

Observe Safety Guidelines

detailed in the beginning of this manual.